[PATCH vhost v1 07/19] virtio: find_vqs: pass struct instead of multi parameters
From: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Date: 2024-02-02 09:40:11
Also in:
bpf, kvm, linux-remoteproc, linux-s390, linux-um, platform-driver-x86, virtualization
Subsystem:
mellanox hardware platform support, remote processor (remoteproc) subsystem, s390 architecture, the rest, user-mode linux (uml), virtio core, virtio drivers for s390 · Maintainers:
Hans de Goede, Ilpo Järvinen, Vadim Pasternak, Bjorn Andersson, Mathieu Poirier, Heiko Carstens, Vasily Gorbik, Alexander Gordeev, Linus Torvalds, Richard Weinberger, Anton Ivanov, Johannes Berg, "Michael S. Tsirkin", Jason Wang, Cornelia Huck, Halil Pasic, Eric Farman
Now, we pass multi parameters to find_vqs. These parameters may work for transport or work for vring. And find_vqs has multi implements in many places: But every time, arch/um/drivers/virtio_uml.c drivers/platform/mellanox/mlxbf-tmfifo.c drivers/remoteproc/remoteproc_virtio.c drivers/s390/virtio/virtio_ccw.c drivers/virtio/virtio_mmio.c drivers/virtio/virtio_pci_legacy.c drivers/virtio/virtio_pci_modern.c drivers/virtio/virtio_vdpa.c Every time, we try to add a new parameter, that is difficult. We must change every find_vqs implement. One the other side, if we want to pass a parameter to vring, we must change the call path from transport to vring. Too many functions need to be changed. So it is time to refactor the find_vqs. We pass a structure cfg to find_vqs(), that will be passed to vring by transport. Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com> --- arch/um/drivers/virtio_uml.c | 23 ++++----- drivers/platform/mellanox/mlxbf-tmfifo.c | 13 ++---- drivers/remoteproc/remoteproc_virtio.c | 28 ++++++----- drivers/s390/virtio/virtio_ccw.c | 29 ++++++------ drivers/virtio/virtio_mmio.c | 26 +++++------ drivers/virtio/virtio_pci_common.c | 59 +++++++++++------------- drivers/virtio/virtio_pci_common.h | 9 +--- drivers/virtio/virtio_pci_legacy.c | 11 +++-- drivers/virtio/virtio_pci_modern.c | 19 ++++---- drivers/virtio/virtio_vdpa.c | 36 +++++++-------- include/linux/virtio_config.h | 51 ++++++++++++++++---- 11 files changed, 160 insertions(+), 144 deletions(-)
diff --git a/arch/um/drivers/virtio_uml.c b/arch/um/drivers/virtio_uml.c
index 8adca2000e51..c13dfeeb90c4 100644
--- a/arch/um/drivers/virtio_uml.c
+++ b/arch/um/drivers/virtio_uml.c@@ -937,8 +937,8 @@ static int vu_setup_vq_call_fd(struct virtio_uml_device *vu_dev, } static struct virtqueue *vu_setup_vq(struct virtio_device *vdev, - unsigned index, vq_callback_t *callback, - const char *name, bool ctx) + unsigned index, + struct virtio_vq_config *cfg) { struct virtio_uml_device *vu_dev = to_virtio_uml_device(vdev); struct platform_device *pdev = vu_dev->pdev;
@@ -953,10 +953,12 @@ static struct virtqueue *vu_setup_vq(struct virtio_device *vdev, goto error_kzalloc; } snprintf(info->name, sizeof(info->name), "%s.%d-%s", pdev->name, - pdev->id, name); + pdev->id, cfg->names[cfg->cfg_idx]); vq = vring_create_virtqueue(index, num, PAGE_SIZE, vdev, true, true, - ctx, vu_notify, callback, info->name); + cfg->ctx ? cfg->ctx[cfg->cfg_idx] : false, + vu_notify, + cfg->callbacks[cfg->cfg_idx], info->name); if (!vq) { rc = -ENOMEM; goto error_create;
@@ -1013,12 +1015,11 @@ static struct virtqueue *vu_setup_vq(struct virtio_device *vdev, return ERR_PTR(rc); } -static int vu_find_vqs(struct virtio_device *vdev, unsigned nvqs, - struct virtqueue *vqs[], vq_callback_t *callbacks[], - const char * const names[], const bool *ctx, - struct irq_affinity *desc) +static int vu_find_vqs(struct virtio_device *vdev, struct virtio_vq_config *cfg) { struct virtio_uml_device *vu_dev = to_virtio_uml_device(vdev); + struct virtqueue **vqs = cfg->vqs; + unsigned int nvqs = cfg->nvqs; int i, queue_idx = 0, rc; struct virtqueue *vq;
@@ -1031,13 +1032,13 @@ static int vu_find_vqs(struct virtio_device *vdev, unsigned nvqs, return rc; for (i = 0; i < nvqs; ++i) { - if (!names[i]) { + if (!cfg->names[i]) { vqs[i] = NULL; continue; } - vqs[i] = vu_setup_vq(vdev, queue_idx++, callbacks[i], names[i], - ctx ? ctx[i] : false); + cfg->cfg_idx = i; + vqs[i] = vu_setup_vq(vdev, queue_idx++, cfg); if (IS_ERR(vqs[i])) { rc = PTR_ERR(vqs[i]); goto error_setup;
diff --git a/drivers/platform/mellanox/mlxbf-tmfifo.c b/drivers/platform/mellanox/mlxbf-tmfifo.c
index 5c683b4eaf10..a90d5da6200a 100644
--- a/drivers/platform/mellanox/mlxbf-tmfifo.c
+++ b/drivers/platform/mellanox/mlxbf-tmfifo.c@@ -989,15 +989,12 @@ static void mlxbf_tmfifo_virtio_del_vqs(struct virtio_device *vdev) /* Create and initialize the virtual queues. */ static int mlxbf_tmfifo_virtio_find_vqs(struct virtio_device *vdev, - unsigned int nvqs, - struct virtqueue *vqs[], - vq_callback_t *callbacks[], - const char * const names[], - const bool *ctx, - struct irq_affinity *desc) + struct virtio_vq_config *cfg) { struct mlxbf_tmfifo_vdev *tm_vdev = mlxbf_vdev_to_tmfifo(vdev); + struct virtqueue **vqs = cfg->vqs; struct mlxbf_tmfifo_vring *vring; + unsigned int nvqs = cfg->nvqs; struct virtqueue *vq; int i, ret, size;
@@ -1005,7 +1002,7 @@ static int mlxbf_tmfifo_virtio_find_vqs(struct virtio_device *vdev, return -EINVAL; for (i = 0; i < nvqs; ++i) { - if (!names[i]) { + if (!cfg->names[i]) { ret = -EINVAL; goto error; }
@@ -1017,7 +1014,7 @@ static int mlxbf_tmfifo_virtio_find_vqs(struct virtio_device *vdev, vq = vring_new_virtqueue(i, vring->num, vring->align, vdev, false, false, vring->va, mlxbf_tmfifo_virtio_notify, - callbacks[i], names[i]); + cfg->callbacks[i], cfg->names[i]); if (!vq) { dev_err(&vdev->dev, "vring_new_virtqueue failed\n"); ret = -ENOMEM;
diff --git a/drivers/remoteproc/remoteproc_virtio.c b/drivers/remoteproc/remoteproc_virtio.c
index 83d76915a6ad..57d51c9c7b63 100644
--- a/drivers/remoteproc/remoteproc_virtio.c
+++ b/drivers/remoteproc/remoteproc_virtio.c@@ -102,8 +102,7 @@ EXPORT_SYMBOL(rproc_vq_interrupt); static struct virtqueue *rp_find_vq(struct virtio_device *vdev, unsigned int id, - void (*callback)(struct virtqueue *vq), - const char *name, bool ctx) + struct virtio_vq_config *cfg) { struct rproc_vdev *rvdev = vdev_to_rvdev(vdev); struct rproc *rproc = vdev_to_rproc(vdev);
@@ -119,7 +118,7 @@ static struct virtqueue *rp_find_vq(struct virtio_device *vdev, if (id >= ARRAY_SIZE(rvdev->vring)) return ERR_PTR(-EINVAL); - if (!name) + if (!cfg->names[cfg->cfg_idx]) return NULL; /* Search allocated memory region by name */
@@ -143,10 +142,12 @@ static struct virtqueue *rp_find_vq(struct virtio_device *vdev, * Create the new vq, and tell virtio we're not interested in * the 'weak' smp barriers, since we're talking with a real device. */ - vq = vring_new_virtqueue(id, num, rvring->align, vdev, false, ctx, - addr, rproc_virtio_notify, callback, name); + vq = vring_new_virtqueue(id, num, rvring->align, vdev, false, + cfg->ctx ? cfg->ctx[cfg->cfg_idx] : false, + addr, rproc_virtio_notify, cfg->callbacks[cfg->cfg_idx], + cfg->names[cfg->cfg_idx]); if (!vq) { - dev_err(dev, "vring_new_virtqueue %s failed\n", name); + dev_err(dev, "vring_new_virtqueue %s failed\n", cfg->names[cfg->cfg_idx]); rproc_free_vring(rvring); return ERR_PTR(-ENOMEM); }
@@ -180,23 +181,20 @@ static void rproc_virtio_del_vqs(struct virtio_device *vdev) __rproc_virtio_del_vqs(vdev); } -static int rproc_virtio_find_vqs(struct virtio_device *vdev, unsigned int nvqs, - struct virtqueue *vqs[], - vq_callback_t *callbacks[], - const char * const names[], - const bool * ctx, - struct irq_affinity *desc) +static int rproc_virtio_find_vqs(struct virtio_device *vdev, struct virtio_vq_config *cfg) { + struct virtqueue **vqs = cfg->vqs; + unsigned int nvqs = cfg->nvqs; int i, ret, queue_idx = 0; for (i = 0; i < nvqs; ++i) { - if (!names[i]) { + if (!cfg->names[i]) { vqs[i] = NULL; continue; } - vqs[i] = rp_find_vq(vdev, queue_idx++, callbacks[i], names[i], - ctx ? ctx[i] : false); + cfg->cfg_idx = i; + vqs[i] = rp_find_vq(vdev, queue_idx++, cfg); if (IS_ERR(vqs[i])) { ret = PTR_ERR(vqs[i]); goto error;
diff --git a/drivers/s390/virtio/virtio_ccw.c b/drivers/s390/virtio/virtio_ccw.c
index ac67576301bf..11eea5086cff 100644
--- a/drivers/s390/virtio/virtio_ccw.c
+++ b/drivers/s390/virtio/virtio_ccw.c@@ -499,9 +499,8 @@ static void virtio_ccw_del_vqs(struct virtio_device *vdev) } static struct virtqueue *virtio_ccw_setup_vq(struct virtio_device *vdev, - int i, vq_callback_t *callback, - const char *name, bool ctx, - struct ccw1 *ccw) + int i, struct ccw1 *ccw, + struct virtio_vq_config *cfg) { struct virtio_ccw_device *vcdev = to_vc_device(vdev); bool (*notify)(struct virtqueue *vq);
@@ -538,8 +537,11 @@ static struct virtqueue *virtio_ccw_setup_vq(struct virtio_device *vdev, } may_reduce = vcdev->revision > 0; vq = vring_create_virtqueue(i, info->num, KVM_VIRTIO_CCW_RING_ALIGN, - vdev, true, may_reduce, ctx, - notify, callback, name); + vdev, true, may_reduce, + cfg->ctx ? cfg->ctx[cfg->cfg_idx] : false, + notify, + cfg->callbacks[cfg->cfg_idx], + cfg->names[cfg->cfg_idx]); if (!vq) { /* For now, we fail if we can't get the requested size. */
@@ -650,15 +652,13 @@ static int virtio_ccw_register_adapter_ind(struct virtio_ccw_device *vcdev, return ret; } -static int virtio_ccw_find_vqs(struct virtio_device *vdev, unsigned nvqs, - struct virtqueue *vqs[], - vq_callback_t *callbacks[], - const char * const names[], - const bool *ctx, - struct irq_affinity *desc) +static int virtio_ccw_find_vqs(struct virtio_device *vdev, + struct virtio_vq_config *cfg) { struct virtio_ccw_device *vcdev = to_vc_device(vdev); + struct virtqueue **vqs = cfg->vqs; unsigned long *indicatorp = NULL; + unsigned int nvqs = cfg->nvqs; int ret, i, queue_idx = 0; struct ccw1 *ccw;
@@ -667,14 +667,13 @@ static int virtio_ccw_find_vqs(struct virtio_device *vdev, unsigned nvqs, return -ENOMEM; for (i = 0; i < nvqs; ++i) { - if (!names[i]) { + if (!cfg->names[i]) { vqs[i] = NULL; continue; } - vqs[i] = virtio_ccw_setup_vq(vdev, queue_idx++, callbacks[i], - names[i], ctx ? ctx[i] : false, - ccw); + cfg->cfg_idx = i; + vqs[i] = virtio_ccw_setup_vq(vdev, queue_idx++, ccw, cfg); if (IS_ERR(vqs[i])) { ret = PTR_ERR(vqs[i]); vqs[i] = NULL;
diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c
index 59892a31cf76..feb823d279d2 100644
--- a/drivers/virtio/virtio_mmio.c
+++ b/drivers/virtio/virtio_mmio.c@@ -370,8 +370,7 @@ static void vm_synchronize_cbs(struct virtio_device *vdev) } static struct virtqueue *vm_setup_vq(struct virtio_device *vdev, unsigned int index, - void (*callback)(struct virtqueue *vq), - const char *name, bool ctx) + struct virtio_vq_config *cfg) { struct virtio_mmio_device *vm_dev = to_virtio_mmio_device(vdev); bool (*notify)(struct virtqueue *vq);
@@ -386,7 +385,7 @@ static struct virtqueue *vm_setup_vq(struct virtio_device *vdev, unsigned int in else notify = vm_notify; - if (!name) + if (!cfg->names[index]) return NULL; /* Select the queue we're interested in */
@@ -414,7 +413,11 @@ static struct virtqueue *vm_setup_vq(struct virtio_device *vdev, unsigned int in /* Create the vring */ vq = vring_create_virtqueue(index, num, VIRTIO_MMIO_VRING_ALIGN, vdev, - true, true, ctx, notify, callback, name); + true, true, + cfg->ctx ? cfg->ctx[cfg->cfg_idx] : false, + notify, + cfg->callbacks[cfg->cfg_idx], + cfg->names[cfg->cfg_idx]); if (!vq) { err = -ENOMEM; goto error_new_virtqueue;
@@ -487,15 +490,12 @@ static struct virtqueue *vm_setup_vq(struct virtio_device *vdev, unsigned int in return ERR_PTR(err); } -static int vm_find_vqs(struct virtio_device *vdev, unsigned int nvqs, - struct virtqueue *vqs[], - vq_callback_t *callbacks[], - const char * const names[], - const bool *ctx, - struct irq_affinity *desc) +static int vm_find_vqs(struct virtio_device *vdev, struct virtio_vq_config *cfg) { struct virtio_mmio_device *vm_dev = to_virtio_mmio_device(vdev); int irq = platform_get_irq(vm_dev->pdev, 0); + struct virtqueue **vqs = cfg->vqs; + unsigned int nvqs = cfg->nvqs; int i, err, queue_idx = 0; if (irq < 0)
@@ -510,13 +510,13 @@ static int vm_find_vqs(struct virtio_device *vdev, unsigned int nvqs, enable_irq_wake(irq); for (i = 0; i < nvqs; ++i) { - if (!names[i]) { + if (!cfg->names[i]) { vqs[i] = NULL; continue; } - vqs[i] = vm_setup_vq(vdev, queue_idx++, callbacks[i], names[i], - ctx ? ctx[i] : false); + cfg->cfg_idx = i; + vqs[i] = vm_setup_vq(vdev, queue_idx++, cfg); if (IS_ERR(vqs[i])) { vm_del_vqs(vdev); return PTR_ERR(vqs[i]);
diff --git a/drivers/virtio/virtio_pci_common.c b/drivers/virtio/virtio_pci_common.c
index 1d21d1a1b3f5..0ebee2b53eed 100644
--- a/drivers/virtio/virtio_pci_common.c
+++ b/drivers/virtio/virtio_pci_common.c@@ -172,9 +172,7 @@ static int vp_request_msix_vectors(struct virtio_device *vdev, int nvectors, } static struct virtqueue *vp_setup_vq(struct virtio_device *vdev, unsigned int index, - void (*callback)(struct virtqueue *vq), - const char *name, - bool ctx, + struct virtio_vq_config *cfg, u16 msix_vec) { struct virtio_pci_device *vp_dev = to_vp_device(vdev);
@@ -186,13 +184,13 @@ static struct virtqueue *vp_setup_vq(struct virtio_device *vdev, unsigned int in if (!info) return ERR_PTR(-ENOMEM); - vq = vp_dev->setup_vq(vp_dev, info, index, callback, name, ctx, + vq = vp_dev->setup_vq(vp_dev, info, index, cfg, msix_vec); if (IS_ERR(vq)) goto out_info; info->vq = vq; - if (callback) { + if (cfg->callbacks[cfg->cfg_idx]) { spin_lock_irqsave(&vp_dev->lock, flags); list_add(&info->node, &vp_dev->virtqueues); spin_unlock_irqrestore(&vp_dev->lock, flags);
@@ -281,15 +279,15 @@ void vp_del_vqs(struct virtio_device *vdev) vp_dev->vqs = NULL; } -static int vp_find_vqs_msix(struct virtio_device *vdev, unsigned int nvqs, - struct virtqueue *vqs[], vq_callback_t *callbacks[], - const char * const names[], bool per_vq_vectors, - const bool *ctx, - struct irq_affinity *desc) +static int vp_find_vqs_msix(struct virtio_device *vdev, + struct virtio_vq_config *cfg, + bool per_vq_vectors) { struct virtio_pci_device *vp_dev = to_vp_device(vdev); u16 msix_vec; int i, err, nvectors, allocated_vectors, queue_idx = 0; + struct virtqueue **vqs = cfg->vqs; + unsigned int nvqs = cfg->nvqs; vp_dev->vqs = kcalloc(nvqs, sizeof(*vp_dev->vqs), GFP_KERNEL); if (!vp_dev->vqs)
@@ -299,7 +297,7 @@ static int vp_find_vqs_msix(struct virtio_device *vdev, unsigned int nvqs, /* Best option: one for change interrupt, one per vq. */ nvectors = 1; for (i = 0; i < nvqs; ++i) - if (names[i] && callbacks[i]) + if (cfg->names[i] && cfg->callbacks[i]) ++nvectors; } else { /* Second best: one for change, shared for all vqs. */
@@ -307,27 +305,27 @@ static int vp_find_vqs_msix(struct virtio_device *vdev, unsigned int nvqs, } err = vp_request_msix_vectors(vdev, nvectors, per_vq_vectors, - per_vq_vectors ? desc : NULL); + per_vq_vectors ? cfg->desc : NULL); if (err) goto error_find; vp_dev->per_vq_vectors = per_vq_vectors; allocated_vectors = vp_dev->msix_used_vectors; for (i = 0; i < nvqs; ++i) { - if (!names[i]) { + if (!cfg->names[i]) { vqs[i] = NULL; continue; } - if (!callbacks[i]) + if (!cfg->callbacks[i]) msix_vec = VIRTIO_MSI_NO_VECTOR; else if (vp_dev->per_vq_vectors) msix_vec = allocated_vectors++; else msix_vec = VP_MSIX_VQ_VECTOR; - vqs[i] = vp_setup_vq(vdev, queue_idx++, callbacks[i], names[i], - ctx ? ctx[i] : false, - msix_vec); + + cfg->cfg_idx = i; + vqs[i] = vp_setup_vq(vdev, queue_idx++, cfg, msix_vec); if (IS_ERR(vqs[i])) { err = PTR_ERR(vqs[i]); goto error_find;
@@ -340,7 +338,7 @@ static int vp_find_vqs_msix(struct virtio_device *vdev, unsigned int nvqs, snprintf(vp_dev->msix_names[msix_vec], sizeof *vp_dev->msix_names, "%s-%s", - dev_name(&vp_dev->vdev.dev), names[i]); + dev_name(&vp_dev->vdev.dev), cfg->names[i]); err = request_irq(pci_irq_vector(vp_dev->pci_dev, msix_vec), vring_interrupt, 0, vp_dev->msix_names[msix_vec],
@@ -355,11 +353,11 @@ static int vp_find_vqs_msix(struct virtio_device *vdev, unsigned int nvqs, return err; } -static int vp_find_vqs_intx(struct virtio_device *vdev, unsigned int nvqs, - struct virtqueue *vqs[], vq_callback_t *callbacks[], - const char * const names[], const bool *ctx) +static int vp_find_vqs_intx(struct virtio_device *vdev, struct virtio_vq_config *cfg) { struct virtio_pci_device *vp_dev = to_vp_device(vdev); + struct virtqueue **vqs = cfg->vqs; + unsigned int nvqs = cfg->nvqs; int i, err, queue_idx = 0; vp_dev->vqs = kcalloc(nvqs, sizeof(*vp_dev->vqs), GFP_KERNEL);
@@ -374,13 +372,13 @@ static int vp_find_vqs_intx(struct virtio_device *vdev, unsigned int nvqs, vp_dev->intx_enabled = 1; vp_dev->per_vq_vectors = false; for (i = 0; i < nvqs; ++i) { - if (!names[i]) { + if (!cfg->names[i]) { vqs[i] = NULL; continue; } - vqs[i] = vp_setup_vq(vdev, queue_idx++, callbacks[i], names[i], - ctx ? ctx[i] : false, - VIRTIO_MSI_NO_VECTOR); + + cfg->cfg_idx = i; + vqs[i] = vp_setup_vq(vdev, queue_idx++, cfg, VIRTIO_MSI_NO_VECTOR); if (IS_ERR(vqs[i])) { err = PTR_ERR(vqs[i]); goto out_del_vqs;
@@ -394,26 +392,23 @@ static int vp_find_vqs_intx(struct virtio_device *vdev, unsigned int nvqs, } /* the config->find_vqs() implementation */ -int vp_find_vqs(struct virtio_device *vdev, unsigned int nvqs, - struct virtqueue *vqs[], vq_callback_t *callbacks[], - const char * const names[], const bool *ctx, - struct irq_affinity *desc) +int vp_find_vqs(struct virtio_device *vdev, struct virtio_vq_config *cfg) { int err; /* Try MSI-X with one vector per queue. */ - err = vp_find_vqs_msix(vdev, nvqs, vqs, callbacks, names, true, ctx, desc); + err = vp_find_vqs_msix(vdev, cfg, true); if (!err) return 0; /* Fallback: MSI-X with one vector for config, one shared for queues. */ - err = vp_find_vqs_msix(vdev, nvqs, vqs, callbacks, names, false, ctx, desc); + err = vp_find_vqs_msix(vdev, cfg, false); if (!err) return 0; /* Is there an interrupt? If not give up. */ if (!(to_vp_device(vdev)->pci_dev->irq)) return err; /* Finally fall back to regular interrupts. */ - return vp_find_vqs_intx(vdev, nvqs, vqs, callbacks, names, ctx); + return vp_find_vqs_intx(vdev, cfg); } const char *vp_bus_name(struct virtio_device *vdev)
diff --git a/drivers/virtio/virtio_pci_common.h b/drivers/virtio/virtio_pci_common.h
index 4b773bd7c58c..12b171364e54 100644
--- a/drivers/virtio/virtio_pci_common.h
+++ b/drivers/virtio/virtio_pci_common.h@@ -79,9 +79,7 @@ struct virtio_pci_device { struct virtqueue *(*setup_vq)(struct virtio_pci_device *vp_dev, struct virtio_pci_vq_info *info, unsigned int idx, - void (*callback)(struct virtqueue *vq), - const char *name, - bool ctx, + struct virtio_vq_config *vq_cfg, u16 msix_vec); void (*del_vq)(struct virtio_pci_vq_info *info);
@@ -109,10 +107,7 @@ bool vp_notify(struct virtqueue *vq); /* the config->del_vqs() implementation */ void vp_del_vqs(struct virtio_device *vdev); /* the config->find_vqs() implementation */ -int vp_find_vqs(struct virtio_device *vdev, unsigned int nvqs, - struct virtqueue *vqs[], vq_callback_t *callbacks[], - const char * const names[], const bool *ctx, - struct irq_affinity *desc); +int vp_find_vqs(struct virtio_device *vdev, struct virtio_vq_config *cfg); const char *vp_bus_name(struct virtio_device *vdev); /* Setup the affinity for a virtqueue:
diff --git a/drivers/virtio/virtio_pci_legacy.c b/drivers/virtio/virtio_pci_legacy.c
index d9cbb02b35a1..e8d22fce32f5 100644
--- a/drivers/virtio/virtio_pci_legacy.c
+++ b/drivers/virtio/virtio_pci_legacy.c@@ -110,9 +110,7 @@ static u16 vp_config_vector(struct virtio_pci_device *vp_dev, u16 vector) static struct virtqueue *setup_vq(struct virtio_pci_device *vp_dev, struct virtio_pci_vq_info *info, unsigned int index, - void (*callback)(struct virtqueue *vq), - const char *name, - bool ctx, + struct virtio_vq_config *cfg, u16 msix_vec) { struct virtqueue *vq;
@@ -130,8 +128,11 @@ static struct virtqueue *setup_vq(struct virtio_pci_device *vp_dev, /* create the vring */ vq = vring_create_virtqueue(index, num, VIRTIO_PCI_VRING_ALIGN, &vp_dev->vdev, - true, false, ctx, - vp_notify, callback, name); + true, false, + cfg->ctx ? cfg->ctx[cfg->cfg_idx] : false, + vp_notify, + cfg->callbacks[cfg->cfg_idx], + cfg->names[cfg->cfg_idx]); if (!vq) return ERR_PTR(-ENOMEM);
diff --git a/drivers/virtio/virtio_pci_modern.c b/drivers/virtio/virtio_pci_modern.c
index ee6a386d250b..b23792a26584 100644
--- a/drivers/virtio/virtio_pci_modern.c
+++ b/drivers/virtio/virtio_pci_modern.c@@ -336,9 +336,7 @@ static bool vp_notify_with_data(struct virtqueue *vq) static struct virtqueue *setup_vq(struct virtio_pci_device *vp_dev, struct virtio_pci_vq_info *info, unsigned int index, - void (*callback)(struct virtqueue *vq), - const char *name, - bool ctx, + struct virtio_vq_config *cfg, u16 msix_vec) {
@@ -366,8 +364,11 @@ static struct virtqueue *setup_vq(struct virtio_pci_device *vp_dev, /* create the vring */ vq = vring_create_virtqueue(index, num, SMP_CACHE_BYTES, &vp_dev->vdev, - true, true, ctx, - notify, callback, name); + true, true, + cfg->ctx ? cfg->ctx[cfg->cfg_idx] : false, + notify, + cfg->callbacks[cfg->cfg_idx], + cfg->names[cfg->cfg_idx]); if (!vq) return ERR_PTR(-ENOMEM);
@@ -390,15 +391,11 @@ static struct virtqueue *setup_vq(struct virtio_pci_device *vp_dev, return ERR_PTR(err); } -static int vp_modern_find_vqs(struct virtio_device *vdev, unsigned int nvqs, - struct virtqueue *vqs[], - vq_callback_t *callbacks[], - const char * const names[], const bool *ctx, - struct irq_affinity *desc) +static int vp_modern_find_vqs(struct virtio_device *vdev, struct virtio_vq_config *cfg) { struct virtio_pci_device *vp_dev = to_vp_device(vdev); struct virtqueue *vq; - int rc = vp_find_vqs(vdev, nvqs, vqs, callbacks, names, ctx, desc); + int rc = vp_find_vqs(vdev, cfg); if (rc) return rc;
diff --git a/drivers/virtio/virtio_vdpa.c b/drivers/virtio/virtio_vdpa.c
index 8d63e5923d24..4f26b0422797 100644
--- a/drivers/virtio/virtio_vdpa.c
+++ b/drivers/virtio/virtio_vdpa.c@@ -142,8 +142,7 @@ static irqreturn_t virtio_vdpa_virtqueue_cb(void *private) static struct virtqueue * virtio_vdpa_setup_vq(struct virtio_device *vdev, unsigned int index, - void (*callback)(struct virtqueue *vq), - const char *name, bool ctx) + struct virtio_vq_config *cfg) { struct virtio_vdpa_device *vd_dev = to_virtio_vdpa_device(vdev); struct vdpa_device *vdpa = vd_get_vdpa(vdev);
@@ -161,7 +160,7 @@ virtio_vdpa_setup_vq(struct virtio_device *vdev, unsigned int index, bool may_reduce_num = true; int err; - if (!name) + if (!cfg->names[cfg->cfg_idx]) return NULL; if (index >= vdpa->nvqs)
@@ -203,8 +202,12 @@ virtio_vdpa_setup_vq(struct virtio_device *vdev, unsigned int index, else dma_dev = vdpa_get_dma_dev(vdpa); vq = vring_create_virtqueue_dma(index, max_num, align, vdev, - true, may_reduce_num, ctx, - notify, callback, name, dma_dev); + true, may_reduce_num, + cfg->ctx ? cfg->ctx[cfg->cfg_idx] : false, + notify, + cfg->callbacks[cfg->cfg_idx], + cfg->names[cfg->cfg_idx], + dma_dev); if (!vq) { err = -ENOMEM; goto error_new_virtqueue;
@@ -213,7 +216,7 @@ virtio_vdpa_setup_vq(struct virtio_device *vdev, unsigned int index, vq->num_max = max_num; /* Setup virtqueue callback */ - cb.callback = callback ? virtio_vdpa_virtqueue_cb : NULL; + cb.callback = cfg->callbacks[cfg->cfg_idx] ? virtio_vdpa_virtqueue_cb : NULL; cb.private = info; cb.trigger = NULL; ops->set_vq_cb(vdpa, index, &cb);
@@ -353,12 +356,8 @@ create_affinity_masks(unsigned int nvecs, struct irq_affinity *affd) return masks; } -static int virtio_vdpa_find_vqs(struct virtio_device *vdev, unsigned int nvqs, - struct virtqueue *vqs[], - vq_callback_t *callbacks[], - const char * const names[], - const bool *ctx, - struct irq_affinity *desc) +static int virtio_vdpa_find_vqs(struct virtio_device *vdev, + struct virtio_vq_config *cfg) { struct virtio_vdpa_device *vd_dev = to_virtio_vdpa_device(vdev); struct vdpa_device *vdpa = vd_get_vdpa(vdev);
@@ -366,24 +365,25 @@ static int virtio_vdpa_find_vqs(struct virtio_device *vdev, unsigned int nvqs, struct irq_affinity default_affd = { 0 }; struct cpumask *masks; struct vdpa_callback cb; - bool has_affinity = desc && ops->set_vq_affinity; + bool has_affinity = cfg->desc && ops->set_vq_affinity; + struct virtqueue **vqs = cfg->vqs; + unsigned int nvqs = cfg->nvqs; int i, err, queue_idx = 0; if (has_affinity) { - masks = create_affinity_masks(nvqs, desc ? desc : &default_affd); + masks = create_affinity_masks(nvqs, cfg->desc ? cfg->desc : &default_affd); if (!masks) return -ENOMEM; } for (i = 0; i < nvqs; ++i) { - if (!names[i]) { + if (!cfg->names[i]) { vqs[i] = NULL; continue; } - vqs[i] = virtio_vdpa_setup_vq(vdev, queue_idx++, - callbacks[i], names[i], ctx ? - ctx[i] : false); + cfg->cfg_idx = i; + vqs[i] = virtio_vdpa_setup_vq(vdev, queue_idx++, cfg); if (IS_ERR(vqs[i])) { err = PTR_ERR(vqs[i]); goto err_setup_vq;
diff --git a/include/linux/virtio_config.h b/include/linux/virtio_config.h
index 2b3438de2c4d..e2c72e125dae 100644
--- a/include/linux/virtio_config.h
+++ b/include/linux/virtio_config.h@@ -94,6 +94,20 @@ typedef void vq_callback_t(struct virtqueue *); * If disable_vq_and_reset is set, then enable_vq_after_reset must also be * set. */ + +struct virtio_vq_config { + unsigned int nvqs; + + /* the vq index may not eq to the cfg index of the other array items */ + unsigned int cfg_idx; + + struct virtqueue **vqs; + vq_callback_t **callbacks; + const char *const *names; + const bool *ctx; + struct irq_affinity *desc; +}; + struct virtio_config_ops { void (*get)(struct virtio_device *vdev, unsigned offset, void *buf, unsigned len);
@@ -103,10 +117,7 @@ struct virtio_config_ops { u8 (*get_status)(struct virtio_device *vdev); void (*set_status)(struct virtio_device *vdev, u8 status); void (*reset)(struct virtio_device *vdev); - int (*find_vqs)(struct virtio_device *, unsigned nvqs, - struct virtqueue *vqs[], vq_callback_t *callbacks[], - const char * const names[], const bool *ctx, - struct irq_affinity *desc); + int (*find_vqs)(struct virtio_device *vdev, struct virtio_vq_config *cfg); void (*del_vqs)(struct virtio_device *); void (*synchronize_cbs)(struct virtio_device *); u64 (*get_features)(struct virtio_device *vdev);
@@ -213,8 +224,14 @@ struct virtqueue *virtio_find_single_vq(struct virtio_device *vdev, vq_callback_t *callbacks[] = { c }; const char *names[] = { n }; struct virtqueue *vq; - int err = vdev->config->find_vqs(vdev, 1, &vq, callbacks, names, NULL, - NULL); + struct virtio_vq_config cfg = {}; + + cfg.nvqs = 1; + cfg.vqs = &vq; + cfg.callbacks = callbacks; + cfg.names = names; + + int err = vdev->config->find_vqs(vdev, &cfg); if (err < 0) return ERR_PTR(err); return vq;
@@ -226,7 +243,15 @@ int virtio_find_vqs(struct virtio_device *vdev, unsigned nvqs, const char * const names[], struct irq_affinity *desc) { - return vdev->config->find_vqs(vdev, nvqs, vqs, callbacks, names, NULL, desc); + struct virtio_vq_config cfg = {}; + + cfg.nvqs = nvqs; + cfg.vqs = vqs; + cfg.callbacks = callbacks; + cfg.names = names; + cfg.desc = desc; + + return vdev->config->find_vqs(vdev, &cfg); } static inline
@@ -235,8 +260,16 @@ int virtio_find_vqs_ctx(struct virtio_device *vdev, unsigned nvqs, const char * const names[], const bool *ctx, struct irq_affinity *desc) { - return vdev->config->find_vqs(vdev, nvqs, vqs, callbacks, names, ctx, - desc); + struct virtio_vq_config cfg = {}; + + cfg.nvqs = nvqs; + cfg.vqs = vqs; + cfg.callbacks = callbacks; + cfg.names = names; + cfg.ctx = ctx; + cfg.desc = desc; + + return vdev->config->find_vqs(vdev, &cfg); } /**
--
2.32.0.3.g01195cf9f